Steam-generator



(No Model.)

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STEAM GENERATOR.-

Patented July 26, 18,87...

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'(No Model.) I 2 Sheets-Sheet 2.

A. BOW-ERS..

STEAM GENERATOR. No. 367,181. Patented July 26, 1887.

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UNITED STATES PATE T OFFICE.

ALBERT M. BOWER-S, OF NEYVARK, NEW JERSEY.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 367,181, dated July 26, 1887.

Application filed December 4, 1846. Serial No. 220,679. (No model.)

To all whom it may concern:

Be it known that I, ALBERT M. Bownns, of Newark, in the county of Essex and State of New Jersey, have invented a .new and Improved Steam-Generator, of which the following is a full, clear, and exact description.

The object of this invention is to provide for the rapid and economical generation of 'dry steam; to provide for a positive and continuous circulation of the water within the boiler and generator; to provide for the clearing of the circulating water from all sedimentarymatter, and ,at'the same time to provide a generator that shall be cheaper, more durable, and much safer than other generators of the class to which this invention relates.

I am aware of the construction set forth in Letters Patent N 0. 344,522, granted J. A. Eno on the 29th day of June, 1886, wherein the generator-tubes are shown and described as being provided with independent non-communicating end caps, and this construction I do not claim.

Reference is to be had to the accompanying drawings, forming a part of this specification,

.in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal sectional view of my improved form of generator, the view be ing taken on line x of Fig. 2 and the generator represented as it appears when ar ranged in connection with a boiler. Fig.2 is a sectional plan view taken on line y y of Fig. 1. Fig. 3 is a view of the forward end of the generator and the boiler in connection with which it is arranged. Fig. 4 is a crosssectional view taken on line z z of Fig. 1. Fig. 5 is a perspective view of a portion of the generator, one only of the central reservoirs being shown, and the walls of this reservoir being broken away to disclose the interior construction; and Fig 6 is a detail view illustrating the construction of one of the forward reservoirs, which reservoir is shown in central horizontal section.

In the drawings above referred'to, 1O represents a boiler or reservoir, in connection with which my improved form of generator is represented as being arranged. This generator consists, essentially, of a forward reservoir, 11, and a central reservoir, 12, through which reservoir I pass tubes 13, and between which I arrange tubes 14, the tubes 14 being arranged so that they surround the tubes 13, Water spaces or channels 2 being consequently formed between the outer faces of the tubes 13 and the inner faces of the tubes 14.

The reservoir 12 is connected with a sediment drum or receptacle, 15, by means of a pipe, 16,which drum is in turn connected with the under side of the rear end of the boiler 10 by means ofv a pipe, 17, which extends downward within the drum or receptacle to a point below that at which the pipe 16 branches off. The drum or receptacle 15 also acts as a supply-reservoir for the reservoirs 11 and 12 and their water-channels 2. The reservoir 11 .is connected with the forward end of the boiler 10 bya connecting-pipe, 18, said pipe tapping the boiler at a point just above the waterlevel. To one side of the sediment-receptacle 15 I connect a blow-off pipe, 19, while upon the other sidcI arrange a hand-hole, 20. r

Although I have described my improved form of generator as made up of end reservoirs and two lines which penetrate each of said reservoirs, it will of course be understood that three, four, or any desired number of fines could be so arranged, and although I have described the generator as consisting of asingle pair of end reservoirs penetrated by fines, in practice I prefer to employ two such pairs, that are arranged as clearly illustrated in the drawings, the forward reservoirs, 11, of each pair being just in front of the bridge-wall of the boiler, while the rear reservoirs are supported upon a column, 21.

The sediment-receptacle, the reservoirs 11 and 12, and all of the pipes and connections employed in the construction of the generator above described, and illustrated in the drawings, are made of wrought metal, and as the boiler 10 is also made of wrought metal it follows that when the parts are subjected to the act-ion of heat they will all expand equally. Various forms of joints may be employed in the formation of the reservoirs, and various connections may be employed in connecting the tubes and pipes to the reservoir; but in practice I prefer such joints and connections as those illustrated in Figs. 5 and 6.

When the generator above described is in operation, the water within the reservoirs 11 and 12 and the water-spaces 2 will be heated,

and steam will be generated in the parts named, which steam will pass upward through the pipes 18 and into the boiler 10, the area of each of the pipes 18 being slightly in excess of the combined areas of the water-spaces 2 between the reservoirs, in connection with which said pipes 18 are arranged, and as the steam so generated passes into the boiler 10, water from the rear lower end of the boiler will pass downward through the tubes 17 and into the sediment-receptacle 15, all sedimentary matter dropping to the bottom of said receptacle, leaving the clarified water to pass through the tubes or pipes 16 to the reservoirs 12, thence to pass through the water-spaces 2 to the reservoirs 11, and so on up through the pipes 18 to the boiler, and this circulation is continuously maintained.

From the construction described it will be noticed that although, for the sake of clearness of description, I have spoken of reservoirs 11 and 12 and connecting waterpassages 2, in reality the parts named form one continuous reservoir made up of wrought-metal boxes 11 and 12 and tubes 13 and 14.

\Vith such a generator as the one above de scribed I have found it desirable that the feedwater that is necessarily supplied to the boiler should be delivered to the supply-reservoir and sediment-rcceptacle 15, instead of being delivered directly to the boiler; and to this end I connect the feed-supply pipe to said reservoir and receptacle at a point somewhat below the lower end of the tube 17. By so c011 necting the supply-pipe, which is shown at 22, I prevent the introduction of cold or even chilled water to the boiler proper, and thereby obtain an immense advantage over the ordi nary method ofsupplying the feed.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In combination, a boiler, two or more sets or series of steam-generator tubes, the tubes of each set or series being connected to end reservoirs that are common to all the tubes of the series, a supply-reservoir, connections between the supply-reservoir and the boiler, and connections between the supply-reservoir and the end reservoirs and between the generatortubes and the boiler, substantially as described.

2. An attachment for boilers consisting, essentially, of two end reservoirs, two or more fire-tubes that extend through the reservoirs,

inclosing tubes that surround the said firetubes and which are connected to the opposite inner faces of the reservoirs, and asupply-reservoir, the supply-reservoir and the generator being arranged for connection with the boiler, substantially as described.

3. In combination, a boiler, a combined sedimerit-receptacle and supply-reservoir, a tube connecting said boiler and the supply-reservoir or sediment-receptacle and extending downward within said receptacle, a steam-generator of the character described, and tubes or pipes connecting the generator at one end with the sediment-receptacle and supply-reservoir and at the other end with the boiler, substantially as described.

4. In combination,in a steam-generator,substantially as described, a boiler, a combined sediment-receptacle and supply-reservoir, two or more gencratortubes connected to the supply-reservoir and arranged to receive water therefrom, a tube connecting the boiler and the sediment-receptacle or supply-reservoir and extending downward within the receptacle below the point from which the water is delivered therefrom to the generator-tubes, and a pipe connecting the generator-tubes and'the boiler, substantially as described.

5. In combination, a boiler, two generators, substantially as described, con nections between each generator and the forward end of the boiler, a combined sediment-receptacle and supply reservoir, a connection between the boiler and said supply-reservoir, connections between the steam-generators and the supplyrcservoir, and afeed'pipe leading to the supply-reservoir, substantially as described.

6. In a steamgenerator, the combination, with a boiler, of a combined sediment-receptacle and supply-reservoir, two or more generator-tubes connected to the supply-reservoir and arranged to receive water therefrom, a tube connecting the boiler and the sedimentreceptacle or supply-reservoir and extending downward within the receptacle, a tube c011- necting the generator and the boiler, and a feed'pipe leading to the supply-reservoir and entering said reservoir below the point from which the water is delivered therefrom to the generator-tubes, substantially as described.

ALBERT M. BO\VERS.

Vitnesses:

EDWARD KENT, J r., C. SEDGWIOK. 

